64242018 has 32 divisors (see below), whose sum is σ = 147686400. Its totient is φ = 20675088.

The previous prime is 64242011. The next prime is 64242019. The reversal of 64242018 is 81024246.

64242018 is a `hidden beast` number, since 642 + 4 + 2 + 0 + 18 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 64241982 and 64242000.

It is not an unprimeable number, because it can be changed into a prime (64242011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18946 + ... + 22077.

It is an arithmetic number, because the mean of its divisors is an integer number (4615200).

Almost surely, 2^64242018 is an apocalyptic number.

64242018 is an abundant number, since it is smaller than the sum of its proper divisors (83444382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64242018 is a wasteful number, since it uses less digits than its factorization.

64242018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41063 (or 41057 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 64242018 is about 8015.1118519956. Note that the first 3 decimals coincide. The cubic root of 64242018 is about 400.5035699439.

The spelling of 64242018 in words is "sixty-four million, two hundred forty-two thousand, eighteen".